Rear bumper for an automobile



FIG. 1 is a perspective view of a rear bumper for an automobile showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a top plan view;

FIG. 5 is a bottom plan view;

FIG. 6 is a left side elevational view, the right side being a mirror image thereof; and

FIG. 7 is a sectional view taken along line VII--VII of FIG. 2. 

The ornamental design for a rear bumper for an automobile, as shown. 